Recently Google improved their algorithms to display related searches based on the current "hot" topics. For example, if you search for "soccer" you will find the ongoing "euro soccer 2008" as a related search suggestion.

You can read more about it at the Official Google Blog.

Keep a watch on Google to find related fresher search terms for keywords you have an interest in. Use it to create additional content that will be useful to your customers and site visitors. This is a dynamic feature, meaning the related searches displayed by Google will change over time. So you will probably need to check the keywords once every week to find new "hot" topics and ideas.